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Warnings and precautions

Rapiscan has the potential to cause serious and life-threatening reactions, including those listed below. Continuous ECG monitoring should be performed and vital signs should be monitored at frequent intervals until the ECG parameters, heart rate and blood pressure have returned to pre-dose levels.

Rapiscan should be used with caution and should only be administered in a medical facility with cardiac monitoring and resuscitation equipment.
Aminophylline may be administered in doses ranging from 50 mg to 250 mg by slow intravenous injection (50 mg to 100 mg over 30-60 seconds) to attenuate severe and/or persistent adverse reactions to Rapiscan.

Myocardial ischaemia

Fatal cardiac arrest, life-threatening ventricular arrhythmias, and myocardial infarction may result from the ischaemia induced by pharmacologic stress agents like regadenoson.

Sinoatrial and atrioventricular nodal block

Adenosine receptor agonists including regadenoson can depress the sinoatrial (SA) and arterioventriular (AV) nodes and may cause first, second or third degree AV block, or sinus bradycardia.

Bronchoconstriction

Adenosine receptor agonists may cause bronchoconstriction and respiratory compromise. For patients with known or suspected bronchoconstrictive disease, chronic obstructive pulmonary disease (COPD) or asthma, appropriate bronchodilator therapy and resuscitative measures should be available prior to Rapiscan administration.

Long QT syndrome

Regadenoson stimulates sympathetic output and may increase the risk of ventricular tachyarrhythmias in patients with a long QT syndrome.

Warnings related to excipients

This medicinal product contains less than 1 mmol sodium (23 mg) per dose. However, the injection of sodium chloride 9 mg/ml (0.9%) solution given after Rapiscan contains 45 mg of sodium. To be taken into consideration by patients on a controlled sodium diet.